Answer:
cos60⁰=3/y
y×cos60⁰=3
y=3/cos60⁰
y=3/0.5
y=6
y²=x²+3²
6²=x²+3²
36=x²+9
x²=36-9
x²=27
x=square root of 27
x=5.19
0.91
Step-by-step explanation:
Answer:-26.25
B
11/4=2.75
3/4=0.75
5/4=1.25
23/4=5.75